01 Record
CVE-2026-33471
nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation
CriticalPUBLISHEDCNA: GitHub_M
CNA base score9.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
02 Description
nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.21% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 12.0% of scored records. A rank, not a probability.
- NVD base score
- 9.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-10-26.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-04-22 19:13Z6 MO AGO
- Last updated
- 2026-04-23 14:15Z6 MO AGO
- Reserved
- 2026-03-20
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 2ca4dc37160937c7a92717d73a160c770ce8663a5758c01683f133793980ce13
05 Affected products
VendorProductVersionsPlatforms